高一英语人教版必修3-Unit-2-healthy-eating-grammar-课件

1、Period 6 GrammarPeriod 6 GrammarModal Verbs Modal Verbs ought to have toought to have tomust need must need I. I. (Revision) (Revision) What What modal verbsmodal verbs ( (情态情态动词动词) )have you learned?have you learned?can/couldcan/couldmay/ might may/ might will/ would will/ would shall/ shouldshall/

2、 should1. By lunchtime they would all be sold. 2. His restaurant ought to be full of people.3. What could have happened?4. Nothing could have been better?5. Something terrible must have happened.6. I will help you lose weight and be fit in two weeks. 7. He couldnt have Yong Hui getting away with tel

3、ling people lies.8. He had better do some research.A.A.Intention (Intention (意向意向) B. Duty() B. Duty(责任责任 ) C. Promise ( ) C. Promise (许诺许诺) ) D. Possibility D. Possibility （可能性）（可能性） E. Guessing E. Guessing（猜测）（猜测）(D)(D)(E)(B)(A)(C)(D)(D)I think she _ apologiseto the public.You _ go andsee the doct

4、or. 我认为她我认为她应该应该向公众道歉。向公众道歉。你你应当应当去找医生看看病。去找医生看看病。ought toought toFill in the blanks according to the Chinese.We _ put on warm clothes in winter. 冬天的时候，我们不冬天的时候，我们不得不得不穿上穿上温暖的衣服。温暖的衣服。你你需要需要把面粉和黄油和在一起。把面粉和黄油和在一起。You _ mix the flour and the butter. have toneedIn England traffic _ keep to the left. 在英

5、国，车辆在英国，车辆必须必须靠左行驶。靠左行驶。All passengers _wear seat belts.所有乘客都所有乘客都必须必须系安全带。系安全带。mustmustneed / needntought to/should must / have to ought to 和和should都为都为“_”的意思，的意思，可用于各种人称。可用于各种人称。ought to 的语气稍重的语气稍重一些。一些。 You ought to (should) follow yourteachers advice.ought toshould否定形式：否定形式：应该应该ought not to / ou

6、ghtnt Advice and duty should 与与 ought to 相同点相同点:从道义从道义,义务上应做义务上应做的事的事:应该应该,应当应当” 不同点不同点:ought to有引申的用有引申的用法法”按常理应当按常理应当,非常可能非常可能的事的事,表应该表应该,侧重责任侧重责任,义务义务:1. -Did the train arrive in time?-No. It _ two hours ago.A. must have arrived B. ought to have arrivedC. must arrive D. ought to arriveB must的用法的用

7、法 1. 必须必须 - Must we hand in our exercise today? -Yes, you _. -No , you_. -No, you _.must / have tomustneednt dont have to 2. Must I drive to his house and pick up the children? No, . A. you shouldnt B. you might not C. you neednt D. you mustntC have to 的用法的用法 1. must表示一种表示一种_的需要，意思是的需要，意思是“必须必须” 无时态

8、变化。无时态变化。 2. have to表示一种表示一种_的需要，意思是的需要，意思是“不得不不得不”。有时态变化。有时态变化。否定形式：否定形式：_主观主观客观客观dont have to I _go now.my mother is ill,so I _go now. musthave to主观看法主观看法客观需要客观需要注意对注意对need问句的回答问句的回答:-Need I finish the work today?-Yes, _. No, _. No, _.you mustyou needntyou dont have toneed / neednt 在不表示推测的情态动词中在不表

9、示推测的情态动词中, 我们要注我们要注意以下方面的问题意以下方面的问题:1.表示能力、许可的情态动词的用法。表示能力、许可的情态动词的用法。表示能力表示能力: can, could, be able tobe able to 能用于各种时态。能用于各种时态。can / could 只能表示现在或过去的能力。只能表示现在或过去的能力。表示许可表示许可: may / might, can / could might, could 比较委婉比较委婉, 一般多用于疑一般多用于疑问句。问句。在以在以could, might 表示征询对方意见表示征询对方意见或表示请求时，回答应相应使用或表示请求时，回答应

10、相应使用can, may。2. 表示否定的情态动词的用法表示否定的情态动词的用法:mustnt 不准不准; 禁止禁止 neednt 没必要没必要 ( = dont have to )cant 不能不能; 不可能不可能may not 不可以不可以; 可能不可能不shouldnt 不应该不应该 ( = ought not to )部分情态动词的否定式是情态动词中的部分情态动词的否定式是情态动词中的考点之一。考点之一。不同的不同的“肯定肯定”程度可按下列层次排列：程度可按下列层次排列： He is at home. (事实事实) He must be at home. (非常肯定的推断非常肯定的推断

11、) He could be at home. (很可能很可能) He ought to be at home. (很可能很可能) He may be at home. (仅仅可能而已仅仅可能而已) He might be at home. (或许或许, 非常不确定非常不确定)He couldnt be at home. (很可能不在家很可能不在家) He cant be at home. (一定不在家一定不在家)He isnt at home. (事实事实) 1. Where is my pen? I _ it. A. might lose B. would have lost C. shou

12、ld have lost D. must have lost2. I didnt hear the phone. I _ asleep. A. must be B. must have been C. should be D. should have been课堂练兵课堂练兵3. Ted, you _ play with the knife. You _ hurt yourself. A. dont have to; must B. mustnt; may C. neednt; can D. oughtnt to; have to4. Must he come to apologize to

13、you himself? Yes, he _. A. can B. must C. may D. need5. Must I take a taxi to go to the Summer Palace? No, you _. You can walk there. A. cant B. dont have to C. mustnt D. ought not to1. What do you mean, there are only ten tickets? There _ be twelve. (2015 全国全国I卷卷) A. should B. would C. will D. shal

14、l2. Hi, Tom. Any idea where Jane is? She _ in the classroom. I saw her there just now. (2014重庆卷重庆卷) A. shall be B. should have been C. must be D. might have been 3You_ buy a gift , but you can if you want to. (2015 湖南卷湖南卷) A. must B. mustnt C. have to D. dont have to4. Mark _ have hurried. After driving at top speed, he arrived half an hour early. (2016 天津卷天津卷) A. neednt B. wouldnt C. mustnt D. couldnt5. You _ park here! Its an emergency exit.(紧急出口紧急出口)(2015 重庆卷重庆卷) A. wouldnt B. neednt C. couldnt D. m